15 x 15¾ table h1 typical interior column size depth

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15 X 15¾ Table H1 Typical Interior Column Size (Depth × Width)
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SYSTEMS PAGE 96 4¼ in. lightweight topping 2 in. metal decking Floor live load = 100 psf Roof live load = 40 psf Interior Columns 15'-0" Max. Multi-story Building Roof Floor Floor 1st Floor Interior Column Sizing Table H2 NUMBER OF STORIES BAY SPACING 1 2 3 4 5 6 20 X 20 4 X 4 6 X 6 10 X 10 10½ X 10¼ 12½ X 12¼ 12¾ X 12¼ 20 X 25 4 X 4 6 X 6 10 X 10 10½ X 10¼ 12½ X 12¼ 12¾ X 12¼ 20 X 30 5 X 5 6 X 6 10 X 10 10½ X 10¼ 12½ X 12¼ 12¾ X 12¼ 20 X 35 5 X 5 8 X 8 10¼ X 10¼ 12½ X 12¼ 12¾ X12¼ 14½ X 14¾ 20 X 40 6 X 6 8 X 8 10¼ X 10¼ 12½ X 12¼ 12¾ X12¼ 14½ X 14¾ 25 X 25 4 X 4 6 X 6 10 X 10 10½ X 10¼ 12½ X 12¼ 12¾ X 12¼ 25 X 30 5 X 5 7 X 7 12¼ X 12 12½ X12¼ 13¼ X 12½ 14½ X 14¾ 25 X 35 5 X 5 8 X 8 12¼ X 12 12¾ X12¼ 13¼ X 12½ 14¾ X 15½ 25 X 40 5 X 5 8 X 8 12¼ X 12 12¾ X12¼ 13¼ X 12½ 14¾ X 15½ 30 X 30 5 X 5 8 X 8 10¼ X 10¼ 12¾ X12¼ 13¼ X 12½ 14¾ X 15½ 30 X 35 5 X 5 10¼ X 10 12½ X 12¼ 14½ X 14¾ 14¾ X 14¾ 15 X 15¾ 30 X 40 5 X 5 10¼ X 10 12½ X 12¼ 14½ X 14¾ 14¾ X 14¾ 15 X 15¾ 35 X 35 6 X 6 10¼ X 10 12½ X 12¼ 14½ X 14¾ 14¾ X 14¾ 15 X 15¾ 35 X 40 6 X 6 10½ X 10¼ 13 X 12¼ 14¾ X 15½ 15¼ X 15¾ 15¾ X 15¾ 40 X 40 8 X 8 10½ X 10¼ 13 X 12¼ 14¾ X 15½ 15¼ X 15¾ 15¾ X 15¾ Table H2 Typical Interior Column Size (Depth × Width)
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PAGE 97 SYSTEMS PART IV MISCELLANEOUS BENDING AND SHAPING OF STRUCTURAL MEMBERS With modern specialized bending and shaping equipment, the architect now has a great deal of flexibility to design with curved steel members whether it be for façades, arches, domes or special accent features. Steel designs need no longer be thought of as strictly rectilinear. Also, there is an array of shapes to choose from to be used as curved members: ! Bars: round, flat and square ! Hollow structural sections: round, rectangular and square ! Channels ! Angles ! Tees There are several methods of bending steel shapes. A common one involves groups of rolls consisting of a com- bination of fixed and moveable or "pinch" rolls whose pressure can be adjusted according to the particular mate- rial being formed. This is illustrated in Figure 41. The sizes that can now be curved range from a 3 / 8 -in. diameter hollow structural section to a 44 in. deep wide- flange beam. The shapes and an approximation of the upper size limits for bending are shown in Table 11. Figure 41. Bending steel shapes with pinch rollers
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SYSTEMS PAGE 98 Table 11 Bent and Rolled Standard Mill Shapes Chart courtesy of Chicago Metal Rolled Products Company.
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PAGE 99 SYSTEMS The practical limits on the degree of bending depend on several factors: ! The tightness of the radius—the tighter (smaller) the radius, the more severe the bend. ! The shape and size of the material. ! The yield strength of the material—lower yield strengths are generally easier to form. ! The capacity of the bending equipment, which will vary by company. ! The skill of the machine operator—although the machines are sophisticated, bending to exacting spec- ifications is part art.
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